Harlan Coben

Myron Bolitar is a sports agent who investigates because somebody has to, and the series runs largely on Win, his genuinely alarming best friend. Coben alternates those with standalones, and Tell No One is the one that converted most readers. The machinery seldom varies: an ordinary suburban family, one buried fact, and a phone call that reopens all of it. He has since put the books on Netflix in several languages, which suits material that crosses borders without much friction.